Patents by Inventor Stefan Böttcher
Stefan Böttcher has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240072113Abstract: A vertical semiconductor device and method for manufacturing the same is provided. The semiconductor device includes a body with a substrate and an epitaxial layer on the substrate, the layer includes a first region of a first conductivity type, and a second region of a second different conductivity type, the second region is arranged opposite to the substrate with respect to the first region, and when viewed in a first direction from the layer to the substrate, the first region and the second region each extend across an entire area of the body. The device further includes a trench arranged in the body, extending through the second region and at least partially into the first region, thereby dividing the second region into an inner and an outer portion that are mutually electrically isolated, and a first conductive contact on the second region to enable electrically accessing the inner portion.Type: ApplicationFiled: August 30, 2023Publication date: February 29, 2024Applicant: NEXPERIA B.V.Inventors: Stefan Berglund, Tim Böttcher, Steffen Holland, Seong-Woo Bae, Detlef Oelgeschlaeger
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Patent number: 11298688Abstract: The invention relates to a method for preparing a hydrogenation catalyst or catalyst precursor comprising a catalytically active material and a carrier material. The method involves the mixing of an acidic solution comprising metal ions of a metal selected from the IUPAC group 8, 9 or 10 metals, preferably cobalt, a suspension comprising the carrier material and an alkaline solution. The invention also relates to a precursor of a hydrogenation catalyst wherein the precursor comprises crystallites of metal oxides having an average size of max. 8 nm.Type: GrantFiled: December 20, 2016Date of Patent: April 12, 2022Assignee: SHELL OIL COMPANYInventors: Andreas Klemt, László Domokos, Frank Peter Friedel, Stefan Boettcher, Erwin Roderick Stobbe
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Patent number: 10569258Abstract: The invention relates to a method for preparing a catalyst or catalyst precursor comprising a catalytically active material and a carrier material. The invention relates to a catalyst particle and catalyst precursor thereof obtainable by said method. The catalyst may be used in a process for synthesising hydrocarbons.Type: GrantFiled: December 21, 2015Date of Patent: February 25, 2020Assignee: SHELL OIL COMPANYInventors: Andreas Klemt, László Domokos, Frank Peter Friedel, Stefan Boettcher, Erwin Roderick Stobbe
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Publication number: 20180369790Abstract: The invention relates to a method for preparing a hydrogenation catalyst or catalyst precursor comprising a catalytically active material and a carrier material. The method involves the mixing of an acidic solution comprising metal ions of a metal selected from the IUPAC group 8, 9 or 10 metals, preferably cobalt, a suspension comprising the carrier material and an alkaline solution. The invention also relates to a precursor of a hydrogenation catalyst wherein the precursor comprises crystallites of metal oxides having an average size of max. 8 nm.Type: ApplicationFiled: December 20, 2016Publication date: December 27, 2018Inventors: Andreas KLEMT, László DOMOKOS, Frank Peter FRIEDEL, Stefan BOETTCHER, Erwin Roderick STOBBE
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Publication number: 20170348677Abstract: The invention relates to a method for preparing a catalyst or catalyst precursor comprising a catalytically active material and a carrier material. The invention relates to a catalyst particle and catalyst precursor thereof obtainable by said method. The catalyst may be used in a process for synthesising hydrocarbons.Type: ApplicationFiled: December 21, 2015Publication date: December 7, 2017Applicant: Shell Oil CompanyInventors: Andreas KLEMT, László DOMOKOS, Frank Peter FRIEDEL, Stefan BOETTCHER, Erwin Roderick STOBBE
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Patent number: 8659451Abstract: A method to at least one of compress and decompress data includes providing a string (T) consisting of multiple given substrings. Identification symbols ($,$1,$2,$3) are assigned to the substrings of the string (T). The substrings of the string (T) are transferred by permutation into a permuted string (O(T),O*(T)). The permuted string (O(T),O*(T)) is sorted into a sorted permuted string (oSort(T), oSort*(T)) according to a given sorting criterion. The identification symbols ($,$1,$2,$3) are permuted and sorted together with the substrings of the sting (T) so that, in a partial inverse transformation step, characters of an Nth substring are sequentially determined within the permuted string (O(T),O*(T)) after determining a position (P) of an Nth identification symbol ($,$1,$2,$3) assigned to an Nth substring within the sorted permuted string (oSort(T),oSort*(T)) without reading characters of other substrings of the permuted string (O(T),O*(T)).Type: GrantFiled: December 18, 2009Date of Patent: February 25, 2014Assignee: Universitaet PaderbornInventors: Stefan Boettcher, Alexander Bueltmann, Rita Hartel
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Patent number: 8351477Abstract: A method of operating a digitally modulated solid state laser is disclosed. The laser is optically pumped by a current-supply driven diode-laser radiation and with output-power stabilized at a desired value by a light regulator cooperative with a power monitor and the current source is disclosed. When the laser is turned on, the current-source is enabled and the light-regulator is disabled. A current regulator allows current from the current-supply to increase until the monitored power reaches the desired value. At this point, the light regulator is enabled and the light regulator assumes control of the current-supply for maintaining the output-power at the desired level.Type: GrantFiled: July 22, 2010Date of Patent: January 8, 2013Assignee: Coherent GmbHInventors: Stefan Böttcher, Axel Kneip
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Publication number: 20120218130Abstract: A method to at least one of compress and decompress data includes providing a string (T) consisting of multiple given substrings. Identification symbols ($,$1,$2,$3) are assigned to the substrings of the string (T). The substrings of the string (T) are transferred by permutation into a permuted string (O(T),O*(T)). The permuted string (O(T),O*(T)) is sorted into a sorted permuted string (oSort(T), oSort*(T)) according to a given sorting criterion. The identification symbols ($,$1,$2,$3) are permuted and sorted together with the substrings of the sting (T) so that, in a partial inverse transformation step, characters of an Nth substring are sequentially determined within the permuted string (O(T),O*(T)) after determining a position (P) of an Nth identification symbol ($,$1,$2,$3) assigned to an Nth substring within the sorted permuted string (oSort(T),oSort*(T)) without reading characters of other substrings of the permuted string (O(T),O*(T)).Type: ApplicationFiled: December 18, 2009Publication date: August 30, 2012Applicant: UNIVERSITAET PADERBORNInventors: Stefan Boettcher, Alexander Bueltmann, Rita Hartel
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Publication number: 20120020380Abstract: A method of operating a digitally modulated solid state laser is disclosed. The laser is optically pumped by a current-supply driven diode-laser radiation and with output-power stabilized at a desired value by a light regulator cooperative with a power monitor and the current source is disclosed. When the laser is turned on, the current-source is enabled and the light-regulator is disabled. A current regulator allows current from the current-supply to increase until the monitored power reaches the desired value. At this point, the light regulator is enabled and the light regulator assumes control of the current-supply for maintaining the output-power at the desired level.Type: ApplicationFiled: July 22, 2010Publication date: January 26, 2012Applicant: Coherent GmbHInventors: Stefan Böttcher, Axel Kneip